Which level of HCPCS codes is comprised of 5-digit numeric codes copyrighted by the AMA?

Level I HCPCS codes are indeed comprised of 5-digit numeric codes and are known as Current Procedural Terminology (CPT) codes, which are developed and copyrighted by the American Medical Association (AMA). These codes are used primarily to describe medical, surgical, and diagnostic services and procedures rendered by healthcare providers. The use of 5-digit numerical structures allows for a standardized way to categorize and bill for services, facilitating communication between providers and payers.

While Level II HCPCS codes refer to codes used for items and services not covered by CPT codes, such as durable medical equipment and non-physician services, and Level III codes were used by health care systems to bill various services (though they are largely no longer used), the defining aspect of the Level I codes is their 5-digit numeric format and association with the AMA. Level IV is not a recognized classification within the HCPCS coding system.

Understanding that Level I codes are proprietary to the AMA will help clarify their unique purposes within the coding landscape.